Pickleball Elbow Is Real, and It Usually Starts at the Shoulder
What the body does: repeated overhead reaching, fast direction changes, sudden stops and starts, often with little warm-up and long sessions.
Where it shows up: shoulder first, then elbow, wrist, knees, calf and Achilles.
Why it happens: overhead motion loads the rotator cuff repeatedly. Shoulder tendinopathy and impingement are the most commonly reported complaints, and lateral elbow pain from repetitive gripping and swinging is common enough to have picked up the nickname "pickleball elbow." Lower-body strains — calf and Achilles especially — come from the planting and stopping, and they rise with age as tissue absorbs load less well.
Worth naming for this audience: many players came to pickleball from something else, or from nothing at all. The conditioning often hasn't caught up to the intensity of tournament play.